Since I enjoy buying Jedi and Sith the most, my Top 10 will probably consist of all Jedi and Sith. But I will take any and all Prequel and Original Trilogy characters.
That being said, here we go
1.) Quinlan Vos
2.) Darth Bane
3.) Darth Plagueis
4.) Saesee Tin
5.) Agen Kolar
6.) Darth Talon
7.) Darth Krayte
8.) Eeth Koth
9.) Coleman Trebor
10.) Yaddle
Jedi Temple Guard, Kyle Katarn, Barriss Offee, Cere Junda, Pong Krell, Darth Sion, and Darth Trea are all rumored. So, that's a lot of cool Jedi and Sith that could be on the way.
While Jedi and Sith are my favorite, it does suck to make a Top 10 without any other characters from the Star Wars Universe. So, here is a Top 10 of all non-Jedi and Sith.
1.) Lobo
2.) Bo Shek
3.) Zam Wessel
4.) Captain Typho
5.) Captain Panaka
6.) Lak Sivrak
7.) Rancor Keeper
8.) Oola
9.) Wookie Chieftan Tarfful
10.) Nien Nunb